rubbing their eyes today on staten island. if you see something tomorrow you'd like to show all of your friends, let us know. tweet me your ideas for the "instant index," @dianesawyer. >>> and, coming up, if you bought a lottery ticket with a friend or a co-worker, you have to stay tuned and see what we're going to tell you next. it could change your life. le announcer ] this is bob, a regular guy with an irregular heartbeat. the usual, bob? not today. [ male announcer ] bob has afib: atrial fibrillation not caused by a heart valve problem, a condition that puts him at greater risk for a stroke. [ gps ] turn left. i don't think so. [ male announcer ] for years, bob took warfarin, and made a monthly trip to the clinic to get his blood tested. but not anymore. bob's doctor recommended a different option: once-a-day xarelto®. xarelto® is the first and only once-a-day prescription blood thinner for patients with afib not caused by a heart valve problem, that doesn't require routine blood monitoring. like warfarin, xarelto® is p